@incollection{
year={2008},
isbn={978-3-540-85482-1},
booktitle={Intelligent Virtual Agents},
volume={5208},
series={Lecture Notes in Computer Science},
editor={Prendinger, Helmut and Lester, James and Ishizuka, Mitsuru},
doi={10.1007/978-3-540-85483-8_4},
title={Expressions of Empathy in ECAs},
url={http://dx.doi.org/10.1007/978-3-540-85483-8_4},
publisher={Springer Berlin Heidelberg},
keywords={ECA; empathy; facial expressions},
author={Niewiadomski, Radoslaw and Ochs, Magalie and Pelachaud, Catherine},
pages={37-44}
}